Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
作業機械の通信状態通知システム
Document Type and Number:
Japanese Patent JP6675360
Kind Code:
B2
Abstract:
To provide a communication state notification system of a work machine that can support determination of a cause of change in a communication situation by notifying the soundness of the communication situation.SOLUTION: A communication state notification system calculates distance d between a base station 2 and a hydraulic excavator 1 on the basis of the position of a base station radio communication device and the position of a work machine, calculates distance attenuation R which is attenuation due to distance of communication radio waves between the base station 2 and hydraulic excavator 1, calculates geography attenuation F which is attenuation due to geography of communication radio waves between the base station 2 and hydraulic excavator 1 on the basis of geographic data, calculates reception power Pr which is an estimation value of strength of a reception signal in radio communication between the base station 2 and hydraulic excavator 1 on the basis of the distance attenuation R and geography attenuation F, and displays it on a display device 150.SELECTED DRAWING: Figure 2

Inventors:
菅原 一宏
Application Number:
JP2017186367A
Publication Date:
April 01, 2020
Filing Date:
September 27, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
日立建機株式会社
International Classes:
H04W16/18; E02F9/26; H04B17/23; H04B17/373; H04B17/391; H04W4/40
Domestic Patent References:
JP2001251358A
JP9153867A
JP2016225944A
JP11242061A
Foreign References:
US20140257779
Attorney, Agent or Firm:
特許業務法人開知国際特許事務所